fix qwen3 prompt templates

modelfile-repo/qwen3-14b-q5_k_m.Modelfile

@@ -20,12 +20,69 @@ PARAMETER presence_penalty 1.5
 PARAMETER stop "<|im_start|>"
 PARAMETER stop "<|im_end|>"
 
-# Template for Qwen3 chat format
-TEMPLATE """{{ if .System }}<|im_start|>system
-{{ .System }}<|im_end|>
-{{ end }}<|im_start|>user
-{{ .Prompt }}<|im_end|>
-<|im_start|>assistant
-"""
+# Template for Qwen3 chat format with tool support
+TEMPLATE """{{- $lastUserIdx := -1 -}}
+{{- range $idx, $msg := .Messages -}}
+{{- if eq $msg.Role "user" }}{{ $lastUserIdx = $idx }}{{ end -}}
+{{- end }}
+{{- if or .System .Tools }}<|im_start|>system
+{{ if .System }}
+{{ .System }}
+{{- end }}
+{{- if .Tools }}
+
+# Tools
+
+You may call one or more functions to assist with the user query.
+
+You are provided with function signatures within <tools></tools> XML tags:
+<tools>
+{{- range .Tools }}
+{"type": "function", "function": {{ .Function }}}
+{{- end }}
+</tools>
+
+For each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:
+<tool_call>
+{"name": <function-name>, "arguments": <args-json-object>}
+</tool_call>
+{{- end -}}
+<|im_end|>
+{{ end }}
+{{- range $i, $_ := .Messages }}
+{{- $last := eq (len (slice $.Messages $i)) 1 -}}
+{{- if eq .Role "user" }}<|im_start|>user
+{{ .Content }}
+{{- if and $.IsThinkSet (eq $i $lastUserIdx) }}
+   {{- if $.Think -}}
+      {{- " "}}/think
+   {{- else -}}
+      {{- " "}}/no_think
+   {{- end -}}
+{{- end }}<|im_end|>
+{{ else if eq .Role "assistant" }}<|im_start|>assistant
+{{ if (and $.IsThinkSet (and .Thinking (or $last (gt $i $lastUserIdx)))) -}}
+<think>{{ .Thinking }}</think>
+{{ end -}}
+{{ if .Content }}{{ .Content }}
+{{- else if .ToolCalls }}<tool_call>
+{{ range .ToolCalls }}{"name": "{{ .Function.Name }}", "arguments": {{ .Function.Arguments }}}
+{{ end }}</tool_call>
+{{- end }}{{ if not $last }}<|im_end|>
+{{ end }}
+{{- else if eq .Role "tool" }}<|im_start|>user
+<tool_response>
+{{ .Content }}
+</tool_response><|im_end|>
+{{ end }}
+{{- if and (ne .Role "assistant") $last }}<|im_start|>assistant
+{{ if and $.IsThinkSet (not $.Think) -}}
+<think>
+
+</think>
+
+{{ end -}}
+{{ end }}
+{{- end }}"""
 
 SYSTEM """You are Qwen, created by Alibaba Cloud. You are a helpful assistant."""